WO2015078229A1 - Tête de meulage à foret latéral à angle variable sans électrode et composants d'entrainement associés - Google Patents

Tête de meulage à foret latéral à angle variable sans électrode et composants d'entrainement associés Download PDF

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Publication number
WO2015078229A1
WO2015078229A1 PCT/CN2014/087552 CN2014087552W WO2015078229A1 WO 2015078229 A1 WO2015078229 A1 WO 2015078229A1 CN 2014087552 W CN2014087552 W CN 2014087552W WO 2015078229 A1 WO2015078229 A1 WO 2015078229A1
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WO
WIPO (PCT)
Prior art keywords
grinding head
sleeve
driving
grinding
reciprocating
Prior art date
Application number
PCT/CN2014/087552
Other languages
English (en)
Chinese (zh)
Inventor
郭毅军
柳长风
张金彬
Original Assignee
重庆西山科技有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from CN201310641876.XA external-priority patent/CN104605913B/zh
Priority claimed from CN201410041760.7A external-priority patent/CN103767759B/zh
Application filed by 重庆西山科技有限公司 filed Critical 重庆西山科技有限公司
Priority to KR1020177012397A priority Critical patent/KR102050216B1/ko
Priority to KR1020177012399A priority patent/KR102050221B1/ko
Priority to EP17179220.3A priority patent/EP3260062B1/fr
Priority to EP14866116.8A priority patent/EP3000417B1/fr
Priority to JP2016553696A priority patent/JP6227159B2/ja
Priority to KR1020157034145A priority patent/KR101740976B1/ko
Priority to US14/894,939 priority patent/US10178998B2/en
Priority to EP17179219.5A priority patent/EP3260061B1/fr
Publication of WO2015078229A1 publication Critical patent/WO2015078229A1/fr

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Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1631—Special drive shafts, e.g. flexible shafts
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1633—Sleeves, i.e. non-rotating parts surrounding the bit shaft, e.g. the sleeve forming a single unit with the bit shaft
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/32—Surgical cutting instruments
    • A61B17/320016—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes
    • A61B17/32002—Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes with continuously rotating, oscillating or reciprocating cutting instruments
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C1/00—Dental machines for boring or cutting ; General features of dental machines or apparatus, e.g. hand-piece design
    • A61C1/08—Machine parts specially adapted for dentistry
    • A61C1/18—Flexible shafts; Clutches or the like; Bearings or lubricating arrangements; Drives or transmissions
    • A61C1/188—Means for allowing non driven rotation of the tool relative to the handle, e.g. toolswivel
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C3/00—Dental tools or instruments
    • A61C3/02—Tooth drilling or cutting instruments; Instruments acting like a sandblast machine
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/16—Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans
    • A61B17/1613—Component parts
    • A61B17/1622—Drill handpieces
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B17/00—Surgical instruments, devices or methods, e.g. tourniquets
    • A61B17/28—Surgical forceps
    • A61B17/29—Forceps for use in minimally invasive surgery
    • A61B2017/2926—Details of heads or jaws
    • A61B2017/2927—Details of heads or jaws the angular position of the head being adjustable with respect to the shaft

Definitions

  • the invention relates to a medical device, in particular to an electrodeless variable angle lateral grinding bit and a driving assembly for orthopedic surgery.
  • the grinding In the course of orthopedic surgery, it is sometimes necessary to grind the bone tissue in the body; in the prior art, the grinding generally uses a power handle to directly drive the grinding head to perform grinding. Since the grinding head is directly driven by the power handle, and the grinding head extends into the human body; it is difficult to control the grinding head for deeper formation of the surgical site; especially for the different grinding parts, the external force can not be controlled to change the grinding head.
  • the cutting part can not be used flexibly and conveniently, and the operation efficiency is low.
  • a bendable grinding head which is controlled by the grinding head to adapt to the change of the grinding portion; the grinding head of the structure is connected by a universal joint, and the structure and the manufacturing process are complicated, and The radius of the tool is increased, and the above surgery of the orthopedics generally requires that the overall outer diameter of the grinding tool is small, otherwise the tool cannot reach the surgical site or the motion disturbance occurs during the operation.
  • the connection structure of the universal joint in order to realize the pitching motion and the rotation transmission simultaneously between the grinding head and the inner cutter tube, the connection structure of the universal joint is adopted, the structure is complicated and the control is unstable; and the structure only has the pitching motion, which cannot be realized.
  • the adaptive operation after the change of the grinding position in the circumferential direction is very inconvenient to use only the tool and the driving handle as a whole, and the driving member for driving the pitch is also primitive, which affects the compactness of the tool.
  • the present invention provides an infinitely variable angle lateral grinding bit, which can adjust the position of the grinding head in the longitudinal direction and the circumferential direction during the operation, has better adaptability to the surgical site, and has better precision.
  • Sexuality improve the efficiency of the surgical procedure, shorten the postoperative recovery period, reduce the pain of the patient and reduce the cost of treatment; and the overall detachable, simple structure, short transmission chain, easy to control and improve the efficiency of surgery.
  • the stepless variable angle lateral grinding bit of the present invention comprises a cutter tube assembly and a grinding head mounted on the front end of the cutter tube assembly, the grinding head being arranged in a manner capable of being driven to pitch and rotate, wherein the cutter tube assembly
  • the utility model comprises an outer cutter tube and an inner cutter tube coaxially rotating and sleeved on the outer cutter tube and matched with the grinding head, and the tail end of the grinding head is hinged to the inner cutter in a circumferential direction
  • the inner cutter tube is provided at least at its front end with a flexible transmission section for articulating with the end of the grinding head and capable of transmitting torque.
  • the rear end of the grinding head forms an open-end hinge groove
  • the front end of the flexible transmission section is provided with a shaft-shaped hinge portion for articulatingly engaging with the hinge groove
  • the end of the grinding head forms a hinge groove
  • the front end of the flexible transmission section is provided with a shaft-shaped hinge portion for articulatingly engaging with the hinge groove, and the shaft-shaped hinge portion and the flexible transmission section form a T-shaped structure;
  • the flexible transmission section and the shaft-shaped hinge connecting the root portion are constricted in a T-shaped plane;
  • the grinding head is provided with a grinding head handle, the hinge groove is located at a tail end of the grinding head handle; the front end of the outer knife tube is hinged with a grinding head mounting sheath, and the grinding head handle is rotated by a single degree of freedom.
  • the grinding blade of the grinding head Cooperating with the inner sleeve of the grinding head, the grinding blade of the grinding head extends forwardly out of the grinding head mounting sheath; the flexible transmission section is connected to the front end of the inner cutter tube, and the shaft-shaped hinge portion is integrally formed at the front end of the flexible transmission section;
  • outer cutter tube may be driven to rotate in a circumferential direction, so that the grinding head mounting sheath and the grinding head are arranged to be driven to revolve;
  • the driving assembly comprising a pitch driving assembly for driving the tilting movement of the grinding head mounting sheath and a directional driving assembly for driving the outer cutter tube to rotate in the circumferential direction;
  • the pitch driving assembly includes a reciprocating intermediate member and a reciprocating driving member, and the front end of the reciprocating intermediate member is coupled to the grinding head mounting sheath in a manner of driving the tilting movement of the grinding head mounting sheath, and the rear end of the reciprocating intermediate member and the reciprocating driving member are at least in the axial direction a driveable engagement, the reciprocating drive member and the connecting handle being cooperatively movable in an axially opposite manner;
  • the directional driving assembly comprises a connecting sleeve coaxially fixed with the outer cutter tube and a driving sleeve fixed in the circumferential direction and axially slidable to the connecting sleeve, the driving sleeve sliding along the axial direction can be engaged or separated from the connecting handle to realize the circumference To limit or release;
  • the driving sleeve is provided with a rearward pre-tightening force, and the pre-tightening force causes the driving sleeve to abut and circumferentially engage with the front end of the connecting handle;
  • the transition end of the reciprocating intermediate member is axially fixedly coupled with a transition sleeve,
  • the outer sleeve of the transition sleeve is provided with a radial driving rod, and the radial driving rod is rotatably engaged with the reciprocating driving member in a single degree of freedom;
  • the reciprocating driving member is a reciprocating driving sleeve provided with an internal thread, and the internal thread and the connecting handle are provided
  • the outer sleeve is matched;
  • the rear portion of the driving sleeve is provided with a constricted neck, and the front portion of the reciprocating driving sleeve is sleeved on the outer circumference of the neck of the driving sleeve, and the rear portion of
  • the invention also discloses a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head mounted on the front end of the cutter tube assembly, the grinding head being arranged in a manner capable of being driven to pitch and rotate, the cutter tube assembly
  • the utility model comprises an outer cutter tube and an inner cutter tube coaxially rotating and sleeved on the outer cutter tube and matched with the grinding head, wherein the front end of the outer cutter tube is hinged with a grinding head mounting sheath, and the grinding head is provided with a grinding head handle
  • the single-degree-of-freedom rotation of the grinding head handle is provided with a limiting ring, and the grinding head handle is sleeved in the grinding head mounting sheath through the limiting ring in an axially constrainable manner.
  • the grinding head mounting sheath comprises an outer sleeve and an inner sleeve sleeved on the outer sleeve, and the limiting ring is provided with two radial symmetry Limiting convexity, the outer circumference of the grinding head handle is provided with an annular limiting groove for engaging the limiting ring and having a radial movable margin, and the inner sleeve is provided with two radially symmetric axial opening slots,
  • the outer sleeve is provided with a radially through limiting through hole and the outer sleeve is an open sleeve having an axial opening;
  • the grinding head handle is sleeved in the inner sleeve, and the two limiting protrusions of the limiting ring are axially open slotted
  • One of the limiting protrusions is embedded in the limiting through hole, and the other limiting protrusion is against the inner wall of the outer casing.
  • the invention also discloses a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head mounted on the front end of the cutter tube assembly, the grinding head being arranged in a manner capable of being driven to pitch and rotate, the cutter tube assembly
  • the utility model comprises an outer cutter tube and an inner cutter tube coaxially rotating and sleeved on the outer cutter tube and matched with the grinding head; the front end of the outer cutter tube is hinged with a grinding head mounting sheath, and the grinding head is rotated and matched in the circumferential direction Mounted on the grinding head mounting sheath, the grinding edge of the grinding head extends forwardly out of the grinding head mounting sheath; the grinding head mounting sheath is provided with a reciprocating intermediate piece for driving the pitching movement in the hinge rotation direction, the reciprocating intermediate piece at least The grinding head mounting sheath has a moving margin in the direction of pitching motion.
  • the reciprocating intermediate member is an intermediate tube between the inner cutter tube and the outer cutter tube, and the intermediate tube has a radial balance between the inner cutter tube and the outer cutter tube, and the radial movement margin is used for Adapting to the radial displacement generated by the intermediate tube when driving the grinding head mounting sheath pitching motion; the front end of the intermediate tube extends forward to form a pitching hinge section for articulation with the grinding head mounting sheath, the pitching hinge section being rigid.
  • the invention also discloses a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head mounted on the front end of the cutter tube assembly, the grinding head being arranged in a manner capable of being driven to pitch and rotate, the cutter tube assembly
  • the utility model comprises an outer cutter tube and an inner cutter tube coaxially rotating and sleeved on the outer cutter tube and matched with the grinding head, and the front end of the outer cutter tube is provided with a grinding head mounting sheath for mounting the grinding head and for driving the pitching movement of the grinding head,
  • the rear end of the grinding head mounting sheath and the front end of the outer cutter tube form a single degree of freedom hinge structure in such a manner that the joint head and the hinge groove are embedded with each other, and the outer cutter tube is used for thickening treatment at a portion hinged with the grinding head mounting sheath.
  • the outer cutter tube is used for articulating with the grinding head mounting sheath, and the outer cutter tube front end is fixedly connected with an outer cutter tube hinge section, and the front end surface of the outer cutter tube hinge section is formed by two arc-shaped joints in a radial direction.
  • the tail end faces of the head mounting sheaths are diametrically opposed to form two arcuate hinge grooves for embedding the two arcuate joints and forming a single degree of freedom hinge structure; the outer blade joint segments are located in two curved hinges A passage for passage through the inner cutter tube is formed between the heads.
  • the invention also discloses a driving assembly for driving a stepless variable angle lateral grinding bit to change a grinding orientation, comprising a connecting handle and a pitch driving assembly for driving the pitching motion of the grinding head of the stepless variable angle lateral grinding bit,
  • the pitching drive assembly includes a reciprocating intermediate member and a reciprocating driving member, the front end of the reciprocating intermediate member is coupled to the grinding head in a manner capable of driving the pitching movement of the grinding head, and the rear end of the reciprocating intermediate member and the reciprocating driving member are at least axially drivably matched
  • the reciprocating drive member and the connecting handle cooperate in an axially relative movement.
  • the driving assembly further includes a directional driving assembly including a connecting sleeve coaxially fixed to the outer cutter tube of the stepless variable angle lateral grinding bit and an axially slidable outer sleeve in the circumferential direction.
  • Drive set The drive sleeve slides in the axial direction to engage or disengage the connecting handle to achieve circumferential limit or release.
  • the driving sleeve is provided with a rearward pre-tightening force, and the pre-tightening force causes the driving sleeve to abut and circumferentially engage with the front end of the connecting handle;
  • the intermediate tube tail end is axially fixedly connected with a transition sleeve, and the transition
  • the outer circumference is provided with a radial driving rod which is rotatably engaged with the reciprocating driving member in a single degree of freedom;
  • the reciprocating driving member is a reciprocating driving sleeve provided with an internal thread, and the internal thread and the connecting handle are provided outside Threading;
  • the rear section of the driving sleeve is provided with a necking, the front section of the reciprocating driving sleeve is sleeved on the outer circumference of the neck of the driving sleeve, and the rear section of the reciprocating driving sleeve is sleeved on the connecting handle.
  • the non-polar variable angle lateral grinding bit of the invention adopts a direct hinge structure for transmitting the transmission between the inner knife tube and the grinding head, and can perform the pitching motion, and compensates for the pitching and the transmission by the flexible transmission structure.
  • the resulting axis is deviated, the transmission structure is simple, the transmission chain is short, which is conducive to stable control, thereby improving the surgical efficiency; and the structure in which the grinding head can be adjusted in both the pitch and the circumferential position can realize the universal azimuth adjustment of the grinding head.
  • the grinding head can realize the longitudinal and circumferential position adjustment according to the change of the surgical orientation, which has better adaptability to the surgical site, has better accuracy, improves the efficiency of the surgical procedure, and shortens the postoperative recovery.
  • the cycle reduces the pain of the patient while reducing the cost of treatment.
  • Figure 1 is a schematic view of the structure of the present invention
  • Figure 2 is a schematic cross-sectional view of the front section of the present invention.
  • Figure 3 is a schematic cross-sectional view of the rear section of the present invention.
  • Figure 4 is an enlarged schematic view of a portion A in Figure 1;
  • Figure 5 is a schematic view of the structure of the grinding head
  • Figure 6 is a schematic view of the structure of the flexible transmission section.
  • FIG. 1 is a schematic structural view of a front view of the present invention
  • FIG. 2 is a schematic cross-sectional structural view of a front section of the present invention
  • FIG. 3 is a schematic cross-sectional structural view of the rear section of the present invention
  • FIG. 4 is an enlarged view of a portion of FIG. 1
  • FIG. 6 is a schematic structural view of a flexible transmission section.
  • the infinitely variable angle lateral grinding bit of the present invention that is, a medical grinding tool, comprising a knife tube assembly and a grinding head 1 mounted on the front end of the knife tube assembly, the grinding head 1 being capable of being driven to pitch and rotate
  • the cutter tube assembly includes an outer cutter tube 3 and an inner cutter tube 11 coaxially rotatably fitted to the outer cutter tube 3 and coupled to the grinding head 1, and the end of the grinding head 1 is driven in the circumferential direction.
  • the method is hinged to the inner cutter tube 11, and the inner cutter tube 11 is provided at least at the front end thereof for use with the grinding head 1 a flexible transmission section 13 that is hinged at the end and capable of transmitting torque;
  • the pitch refers to a certain angle of rotation with respect to the axis of the blade assembly, and the rotation refers to the rotation of the grinding head under driving, and the grinding head can be used during use.
  • Adjusted to be coaxial with the cutter tube assembly after entering the working environment, adjust the pitch position as needed and perform grinding; after pitching, grinding is performed, and the transmission is adapted to the change of the transmission axis through the flexible transmission section.
  • the rear end of the grinding head 1 forms an end-opening hinge groove 1d
  • the front end of the flexible transmission section 13 is provided with a shaft-shaped hinge portion 13a for hinged engagement with the hinge groove 1d
  • the segment 13 has a movable margin between the structure of the hinge groove 1d and the shaft-shaped hinge portion 13a, and can better adapt to the length difference formed after the pitching, so as to smoothly transmit and can be inside.
  • the cutter tube 11 and the flexible transmission section 13 are pulled out from the outer cutter tube 3, and the installation and disassembly are convenient;
  • the shaft-shaped hinge portion 13a and the flexible transmission portion 13 form a T-shaped structure, which can not only ensure the transmission strength of the hinge structure, but also pass through the inwardly thickening of the outer blade tube 3 at the pitch hinge; of course, the structure
  • the hinge can also be applied to a structure in which the hinge groove is not an opening.
  • the connecting portion of the flexible transmission section 13 and the shaft-shaped hinge portion 13a is constricted in a T-shaped plane; the structure is deflected after the shaft-shaped hinge portion 13a is hinged to the hinge groove 1d, and can be adapted to the structure of the hinge groove, Interference with the groove wall of the hinge groove 1d.
  • the grinding head 1 is provided with a grinding head handle 1a, and the hinge groove 1d is located at the tail end of the grinding head handle 1a; the front end of the outer knife tube 3 is hinged with a grinding head mounting sheath 4, The grinding head 1a is rotated in a single degree of freedom to fit inside the grinding head mounting sheath 4.
  • the grinding edge of the grinding head 1 extends forwardly out of the grinding head mounting sheath 4, and the single-degree-of-freedom rotation fit can be used to achieve the Any mechanical means of the structure, including axial mechanical limit, etc.; the structure of the grinding head handle 1a is convenient for installation and assembly, and it is advantageous to ensure the compactness of the structure, and is suitable for the field, and uses the grinding head mounting sheath 4 to drive the grinding
  • the head 1 completes the pitching motion;
  • the flexible transmission section 13 is connected to the front end of the inner cutter tube 11, and the connection can be screwed or snapped, etc., and has good adaptability, and the flexible transmission section can be replaced as needed to ensure the cutter Long-term use;
  • the shaft-shaped hinge 13a is integrally formed on the front end of the flexible transmission section 13; the single-degree-of-freedom hinge means that the relative movement of the two is limited to the direction of rotation of the hinge, and the hinged manner can be hinged by the existing shaft.
  • the hinge groove 4a has a simple structure, convenient processing, flexible hinge rotation, and easy disassembly; the structure makes the outer cutter tube axis and the hinge axis are in the same plane, and the movement is flexible.
  • the grinding head shank 1a and the flexible transmission section 13 can be hinged to have an axial movement allowance, forming a complete
  • the open hinge structure is formed by the shaft hinge portion 13a directly embedded in the hinge groove 1d, and can have an axial margin, so that the movement between the two is smooth, so that the inner knife tube 11 and the flexible transmission portion 13 can be used at any time.
  • the extraction is convenient for cleaning and maintenance; the structure removes the prior art universal joint shaft structure, realizes compact structure and volume reduction, and is more suitable for depth and narrow space.
  • the outer cutter tube 3 can be driven to rotate in the circumferential direction, so that the grinding head mounting sheath 4 and the grinding head 1 can be set to be driven to revolve; the revolution refers to the entire grinding head 1
  • the axis of the cutter tube assembly is rotated to achieve the purpose of universal grinding, that is, two degrees of freedom in the pitch and the circumferential direction are combined to form a working state in a plurality of directions; the grinding head can be adjusted to be connected with the cutter tube assembly during use. Coaxial, after entering the working environment, adjust the pitch and revolution position as needed, and grind.
  • the driving assembly comprising a pitch driving assembly for driving the pitching movement of the grinding head mounting sheath 4 and a direction driving assembly for driving the outer cutter tube to rotate in the circumferential direction;
  • the pitch drive assembly includes a reciprocating intermediate member and a reciprocating drive member 8, and the front end of the reciprocating intermediate member is coupled to the grinding head mounting sheath 4 for driving the grinding head mounting sheath 4 in a pitching motion for driving the grinding head mounting sheath 4
  • Rotating in the hinge direction drives the grinding head 1 to realize the pitching motion
  • the rear end of the reciprocating intermediate member is at least axially drivably engaged with the reciprocating driving member 8, and the reciprocating driving member 8 and the connecting handle 9 are matched in the axially relative movement manner.
  • the reciprocating driving member 8 and the connecting handle 9 are matched in an axially relative movement manner, and can be screwed or otherwise reciprocated. And can be positioned at any time.
  • the directional drive assembly comprises a connecting sleeve 6 coaxially fixed to the outer cutter tube 3 of the grinding tool and a drive sleeve 7 fixed in the circumferential direction and axially slidable to the connecting sleeve, between the outer cutter tube 3 and the connecting sleeve 6
  • the welding connection is used, and the connecting sleeve 6 and the driving sleeve 7 can be realized by an axial flat key or a spline engagement manner, which will not be described herein; the driving sleeve 7 can slide in the axial direction to engage with the connecting handle 9 or
  • the separation realizes the circumferential limit or release; in the present structure, the end face spline can be disposed at the front end of the connecting handle 9, and at the same time, the end end of the driving sleeve 7 is also provided with the end face spline, when the driving sleeve 7 is driven to slide axially by an external force,
  • the spline can be engaged
  • the driving sleeve 7 is provided with a rearward pre-tightening force, and the pre-tightening force causes the driving sleeve 7 to abut and circumferentially engage the front end of the connecting handle 9, and the pre-tightening force can be realized by a spring or a snap spring.
  • the pre-tightening force is used to realize the meshing to avoid misoperation or the problem of detachment during operation; as shown in the figure, the inner circumference of the driving sleeve 7 forms a spring cavity, and a columnar spring 14 is sleeved on the connecting sleeve 6 and the two ends respectively abut the connection.
  • the rod 15a is rotatably engaged with the reciprocating drive member 8 in a single degree of freedom.
  • the radial drive rod 15a is press-fitted axially by a pressure sleeve 16 threadedly engaged with the reciprocating drive member 8; the reciprocating drive member 8 is provided
  • the inner-threaded reciprocating drive sleeve has an internal thread that cooperates with an external thread provided on the connecting handle 9; the rear end of the driving sleeve 7 is provided with a constricted neck, and the front section of the reciprocating driving sleeve is sleeved on the outer circumference of the driving sleeve 7, and then The segment is jacketed on the connecting handle 9; by rotating the reciprocating driving sleeve and driving the radial driving rod 15a to reciprocate, it is smooth and precise, avoiding the frustration in the prior art, and at the same time, the threaded fit makes the parts compact and complete.
  • the rear section of the driving sleeve 7 is provided with a constricted neck, and the front section of the reciprocating driving sleeve is sleeved on the outer circumference of the neck of the driving sleeve 7, and the inner circle of the front section of the reciprocating driving sleeve forms a step, and the step forms an annular groove through the connected gland, as shown in the figure
  • the radial drive rod 15a is fitted into the annular groove to form an axially fixed circumferentially rotatable mating structure.
  • the radial drive rod 15a can be disposed in a plurality of circumferential directions, as shown in the two symmetry.
  • the setting is also relatively uniform
  • the driving force since the radial driving rod is located between the driving sleeve and the connecting handle 9 and the reciprocating driving sleeve, it is necessary to avoid the end surface spline between the driving sleeve 7 and the connecting handle 9 to avoid motion interference; the reciprocating driving sleeve
  • the rear section of the outer sleeve is connected to the handle 9, as shown in the figure, the rear section of the reciprocating drive sleeve is sleeved on the connecting handle and threaded for convenient operation.
  • the end of the stepless variable angle lateral grinding bit is provided with a joint 10 connected to the power, and the connecting handle 9 is connected with the inner surface of the connecting handle 9 to provide necessary support, as shown in FIG.
  • the transition sleeve 15 is sleeved in the rear transition sleeve 18 and is a rotary fit.
  • the sealing transition sleeve 18 is rotationally fitted, and the necessary sealing ring and sliding bearing are provided, and will not be described herein.
  • the invention also discloses a specific embodiment of a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head 1 mounted on the front end of the cutter tube assembly, the grinding head being arranged in a manner capable of being driven to pitch and rotate,
  • the cutter tube assembly comprises an outer cutter tube 3 and an inner cutter tube 11 coaxially rotatably fitted to the outer cutter tube 3 and coupled with the grinding head 1 , and the front end of the outer cutter tube is hinged with a grinding head for single degree of freedom.
  • the sheath 4, the grinding head 1 of the grinding tool is provided with a grinding head 1a, and the grinding head 1a is rotated with a single degree of freedom to provide a limiting ring 1c through which the grinding head 1a can be axially restrained.
  • the grinding head mounting sheath 4 includes an outer sleeve and an inner sleeve 4c sleeved on the outer sleeve.
  • the limiting ring 1c is symmetrically disposed with two limiting protrusions 1c1 and 1c2, and the outer surface of the grinding head handle 1a
  • An annular limiting slot 1b for engaging the limiting ring 1c and having a radial clearance is provided.
  • the single-degree-of-freedom rotational fit is realized by the annular limiting slot 1b embedded by the limiting ring 1c; the inner sleeve 4c is provided There are two radially symmetrical axial opening slots 4c1, 4c2, the outer sleeve is provided with a radially through limiting through hole 4b and the outer sleeve is an open sleeve having an axial opening; the grinding head shank 1a is sleeved therein
  • the two limiting projections 1c1, 1c2 of the limiting ring 1c are engaged along the axial opening slots 4c1, 4c2 of the inner sleeve 4c and one of the limiting projections 1c1 is embedded in the limiting through hole, and the other limit is
  • the positional projection 1c2 is against the inner wall of the outer casing, and the outer casing of the grinding head mounting sheath 4 has an axial opening and thus has a radial direction.
  • the elasticity can be used for fixing the limiting ring 1c; as shown in Fig. 2, the axial opening of the outer casing is distributed at 45° with the limiting through hole in the outer casing; when installing, the grinding head shank 1a is sleeved together with the limiting ring 1c Into the inner sleeve 4c, the two limiting protrusions 1c1, 1c2 are radially limited to compress, when the limiting ring 1c slides to the mounting position, one of the limiting protrusions 1c1 is embedded in the limiting through hole of the outer sleeve to achieve axial limitation; When the limiting protrusion 1c1 in the limiting through hole 4b is pressed downward in the radial direction, the limiting ring 1c (the limiting ring is a split ring, which is convenient for loading into the annular limiting groove 1b and is favorable for deformation) itself and the outer casing will occur.
  • the limiting protrusion 1c1 is disengaged radially inward from the limiting through hole 4b, and the grinding head 1a can be removed; as shown, the outer casing not only has an opening in the axial direction, but also has a circumferential groove in the circumferential direction.
  • the circumferential groove has an opening at the edge of the aforementioned axial opening groove, which reduces the difficulty of installation and disassembly.
  • the stepless variable angle lateral grinding bit of the embodiment can be used in combination with the foregoing technical solution to achieve a better effect.
  • the invention also discloses a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head mounted on the front end of the cutter tube assembly, the grinding head 1 being arranged in a manner capable of being driven to pitch and rotate, the cutter tube
  • the assembly includes an outer cutter tube 3 and an inner cutter tube 11 coaxially rotatably fitted to the outer cutter tube 3 and coupled to the grinding head 1; the front end of the outer cutter tube 3 is hinged with a grinding head mounting sheath 4
  • the grinding head 1 of the grinding tool is rotatably mounted in the circumferential direction to the grinding head mounting sheath 4, and the grinding edge of the grinding head 1 extends forwardly out of the grinding head mounting sheath 4;
  • the grinding head mounting sheath 4 is provided for driving the hinge rotation thereof a reciprocating intermediate member that is tilted in the direction, the reciprocating intermediate member having a movable margin at least in the direction of the pitching movement of the grinding head mounting sheath; to accommodate the radial direction of the reciprocating intermediate member
  • the reciprocating intermediate member is an intermediate tube 12 between the inner knife tube 11 and the outer knife tube 3, and the intermediate tube 12 has a radial balance between the inner knife tube 11 and the outer knife tube 3
  • the radial clearance is used to accommodate the radial displacement generated by the intermediate tube when the pitching of the grinding head mounting sheath 4 is driven; the front end of the intermediate tube 12 extends forward to form a pitching hinge portion 5 for articulating with the grinding head mounting sheath
  • the pitch hinge section 5 is rigid, so that the intermediate tube 12 not only utilizes the radial motion margin to accommodate the small radial displacement of the grinding head mounting sheath, but the rigid structure of the pitch hinge section can smoothly drive the grinding head mounting sheath.
  • the pitching motion is simple and compact in structure, avoiding the volume increase caused by the complicated structure, and ensuring the smooth progress of the operation; as shown in the figure, the pitch hinge section 5 is rigidly thickened to realize the thickened structure.
  • the pitch hinge section 5 forms a short section which is fixedly connected to the intermediate tube, and of course, can also be directly formed in the intermediate tube without affecting the object of the invention.
  • the present embodiment can be used in combination with the foregoing technical solution. Therefore, the end of the intermediate tube 12 is axially fixedly connected to the foregoing transition sleeve 15, and the outer sleeve of the transition sleeve 15 is provided with a radial driving rod 15a.
  • the intermediate transition sleeve 15 is weldedly connected with the intermediate tube 12, and the transition sleeve 15 is integrally formed with the radial drive rod 15a.
  • the radial drive rod 15a is rotated and matched with the reciprocating drive member 8 for single-degree-of-freedom driving, and the structure is simple and compact, and the assembly and disassembly are disassembled. Convenience.
  • the invention also discloses a specific embodiment of a stepless variable angle lateral grinding bit, comprising a cutter tube assembly and a grinding head 1 mounted on the front end of the cutter tube assembly, the grinding head 1 being arranged in a manner capable of being driven to pitch and rotate,
  • the cutter tube assembly includes an outer cutter tube 3 and an inner cutter tube 11 coaxially rotatably fitted to the outer cutter tube 3 and coupled to the grinding head 1, and the front end of the outer cutter tube 3 is provided for safety a grinding head mounting sheath 4 for driving the grinding head 1 and a tilting movement of the grinding head 1 , the rear end of the grinding head mounting sheath 4 and the front end of the outer cutter tube forming a single degree of freedom hinge structure in such a manner that the joint head and the hinge groove are embedded with each other,
  • the cutter tube 3 is used for thickening treatment at a portion hinged with the grinding head mounting sheath 4.
  • This design allows the hinge to have a sufficient thickness to increase the strength, leaving only a narrow passage in the middle, and the thickened treatment structure facilitates grinding.
  • the bending part is increased to bear a large lateral bending moment, thereby ensuring the smooth operation of the operation.
  • the outer cutter tube 3 is used for the joint with the grinding head mounting sheath 4, and the outer cutter tube 3 is fixedly connected with the outer cutter tube hinge portion 3b, and the outer cutter tube 3 and the outer cutter tube hinge portion 3b. It can be connected by screw connection, welding, etc., and will not be described here; the front end face 3c of the outer blade joint section 3b is formed to form two arc-shaped joints 3a in the radial direction, and the tail end faces of the grinding head mounting sheath 4 are formed in two radial directions.
  • the passage of the inner cutter tube 11, the thickening treatment of the outer cutter tube hinge section 3b is radially inward in the passage; the specific shape of the inner cutter tube 11 (including the flexible transmission section 13) allows it to pass through two arcs
  • the two arcuate joints and the front end grinding head are formed to form a universal joint for rotational driving; the structure is thickened for the joint portion Processing and adopting the connection structure of the outer blade joint section 3b and the outer cutter tube 3, not only increase Intensity at the hinge, but also easy to install.
  • the invention also discloses a driving assembly for driving a stepless variable angle lateral grinding bit to change the grinding orientation, comprising a connecting handle 9 and a pitch driving assembly for driving the pitching motion of the grinding head 1 of the stepless variable angle lateral grinding bit
  • the pitch driving assembly includes a reciprocating intermediate member and a reciprocating driving member 8, the front end of the reciprocating intermediate member is coupled to the grinding head 1 in a manner capable of driving the pitching movement of the grinding head 1, and the rear end of the reciprocating intermediate member and the reciprocating driving member 8 are at least In the axially driveable engagement, the reciprocating drive member 8 cooperates with the connecting shank 9 in an axially relative movement.
  • the driving assembly further includes a directional driving assembly including a connecting sleeve 6 coaxially fixed to the outer cutter tube 3 of the stepless variable angle lateral grinding bit and an axially slidable outer sleeve fixed in the circumferential direction
  • the drive sleeve 7 of the sleeve 6 is slidable in the axial direction to be engaged or disengaged from the connecting handle 9 to achieve circumferential limit or release.
  • the driving sleeve 7 is provided with a rearward pre-tightening force, and the pre-tightening force causes the driving sleeve 7 to abut and circumferentially engage the front end of the connecting handle 9; the intermediate tube tail end is axially fixedly connected with the transition sleeve 15
  • the outer circumference of the transition sleeve 15 is provided with a radial driving rod 15a, which is rotatably engaged with the reciprocating driving member 8 in a single degree of freedom;
  • the reciprocating driving member 8 is a reciprocating driving sleeve provided with an internal thread, The internal thread is matched with the external thread provided by the connecting handle 9;
  • the rear portion of the driving sleeve 7 is provided with a constricted neck, and the front portion of the reciprocating driving sleeve is sleeved on the outer circumference of the neck of the driving sleeve 7, and the rear portion is sleeved on the connecting handle 9.

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Surgery (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Dentistry (AREA)
  • Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Molecular Biology (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Epidemiology (AREA)
  • Surgical Instruments (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Abstract

La présente invention concerne une tête de meulage à foret latéral à angle variable sans électrode et des composants d'entraînement associés. La tête de meulage à foret latéral à angle variable sans électrode comprend un ensemble tube tranchant et une tête de meulage (1) installée au niveau de l'extrémité avant de l'ensemble tube tranchant, la tête de meulage (1) pouvant être entraînée dans un mouvement de tangage par auto-rotation. L'extrémité arrière de la tête de meulage (1) est reliée par charnière au tube tranchant interne (11) selon un mode transmission de direction circonférentielle, et le tube tranchant intérieur (11) est au moins situé au niveau d'une position dans laquelle son extrémité avant peut être reliée par charnière à l'extrémité arrière de la tête de meulage (1) et un segment de transmission flexible (13) capable de transmettre un couple. La tête de meulage à foret atteint la transmission et le mouvement de tangage entre le tube tranchant interne (11) et la tête de meulage (1) en utilisant une structure de charnière, la structure d'entraînement flexible étant utilisée pour compenser la déviation de l'axe résultant du mouvement de tangage et de l'entraînement de transmission, simplifiant ainsi la structure d'entraînement, raccourcissant la chaîne d'entraînement et permettant la commande stable. La tête de meulage à foret peut réaliser des ajustements de tangage et de position circonférentielle de la tête de meulage (1) pour obtenir des ajustements de direction et d'orientation sur la tête de meulage (1), permettant une meilleure capacité d'adaptation et une meilleure précision pour le site chirurgical, améliorant ainsi l'efficacité de l'intervention chirurgicale.
PCT/CN2014/087552 2013-11-29 2014-09-26 Tête de meulage à foret latéral à angle variable sans électrode et composants d'entrainement associés WO2015078229A1 (fr)

Priority Applications (8)

Application Number Priority Date Filing Date Title
KR1020177012397A KR102050216B1 (ko) 2013-11-29 2014-09-26 연속 가변각을 갖는 측방향 연삭 드릴 및 그 구동 구성요소
KR1020177012399A KR102050221B1 (ko) 2013-11-29 2014-09-26 연속 가변각을 갖는 측방향 연삭 드릴 및 그 구동 구성요소
EP17179220.3A EP3260062B1 (fr) 2013-11-29 2014-09-26 Fraise de meulage latéral à angle variable en continu et son composant d'entraînement
EP14866116.8A EP3000417B1 (fr) 2013-11-29 2014-09-26 Tête de meulage à foret latéral à angle variable sans électrode et composants d'entrainement associés
JP2016553696A JP6227159B2 (ja) 2013-11-29 2014-09-26 連続可変角度部を含む側方研削ドリル
KR1020157034145A KR101740976B1 (ko) 2013-11-29 2014-09-26 연속 가변각을 갖는 측방향 연삭 드릴 및 그 구동 구성요소
US14/894,939 US10178998B2 (en) 2013-11-29 2014-09-26 Lateral grinding drill with continuously variable angle and driving component thereof
EP17179219.5A EP3260061B1 (fr) 2013-11-29 2014-09-26 Fraise de meulage latéral à angle variable en continu et son composant d'entraînement

Applications Claiming Priority (6)

Application Number Priority Date Filing Date Title
CN201310632414 2013-11-29
CN201310632414.1 2013-11-29
CN201310641876.XA CN104605913B (zh) 2013-11-29 2013-12-03 医用磨削刀具
CN201310641876.X 2013-12-03
CN201410041760.7A CN103767759B (zh) 2014-01-28 2014-01-28 医用磨削刀具
CN201410041760.7 2014-01-28

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WO2015078229A1 true WO2015078229A1 (fr) 2015-06-04

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US (1) US10178998B2 (fr)
EP (3) EP3260062B1 (fr)
JP (3) JP6227159B2 (fr)
KR (3) KR102050221B1 (fr)
ES (1) ES2775187T3 (fr)
WO (1) WO2015078229A1 (fr)

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CN113456164A (zh) * 2021-06-30 2021-10-01 重庆西山科技股份有限公司 具有弯曲部的变向磨削刀具及复合手术器械
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ES2775187T3 (es) 2020-07-24
EP3000417A1 (fr) 2016-03-30
JP6227159B2 (ja) 2017-11-08
EP3000417B1 (fr) 2018-09-19
US20160106442A1 (en) 2016-04-21
EP3260061A1 (fr) 2017-12-27
JP2016537167A (ja) 2016-12-01
KR20170056020A (ko) 2017-05-22
KR101740976B1 (ko) 2017-05-29
EP3260062A1 (fr) 2017-12-27
KR102050221B1 (ko) 2019-11-29
KR102050216B1 (ko) 2019-11-29
KR20170054566A (ko) 2017-05-17
JP2017192742A (ja) 2017-10-26
JP6410876B2 (ja) 2018-10-24
EP3260061B1 (fr) 2020-01-08
JP2017170183A (ja) 2017-09-28
JP6303048B2 (ja) 2018-03-28
EP3000417A4 (fr) 2017-01-18
US10178998B2 (en) 2019-01-15
EP3260062B1 (fr) 2019-04-03
KR20160003220A (ko) 2016-01-08

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